Note: Like Nassau, Westchester does not post signs for its county routes. The numbering system is highly confusing and would inevitably lead people to get lost easily if signs were posted for the route numbers. There is no shortage of oddities, including roads that change route number multiple times throughout their length, multiple roads with the same route number, spurs off of routes that don't exist, and four-digit route numbers. There are a large number of roads that lose their numbers at municipal borders. Route numbers begin at CR 2 and continue through CR 156. There is also a second set of routes numbered from CR 300 to CR 313, as well as CR 1308, CR 1309, and CR 1323. However, many numbers are skipped among the lower-numbered routes. According to Jim Johnson, a former employee of the WCDPW, the unused numbers were reserved for roads that were planned to be developed as county routes but were either developed as state routes or remained under the authority of city, town, and village governments. For example, CR 1 was reserved for Dobbs Ferry Road, which became NY 100B. The oldest available record of the county route system is from 1961, at which time there were almost no differences from the present system. However, the portion of Yonkers Avenue that is now a state reference route was then designated CR 66. This explains why there is currently CR 66A but no CR 66.